CSV to Excel Converter

Drop the CSV file onto the upload area (or paste its text), check the preview, and click Convert to Excel (.xlsx). The file downloads immediately and opens in Excel with columns already split, numbers stored as numbers and the header row formatted.

When Excel opens a CSV directly it guesses: it drops leading zeros from ZIP codes and IDs, turns long numbers into 1.23E+15, may read 03/04 as a date in the wrong order, and splits on the wrong character when your regional list separator differs. Converting here lets you control each of those, and the result is a real .xlsx.

Yes. Add several CSV files and each becomes its own sheet named after the file. Use the arrows to set the sheet order. To stack files into a single sheet instead, use the CSV Merger.

Values like 1,234.50, 12%, $9.99, 2024-03-15 and TRUE are stored as Excel numbers, dates and booleans, keeping a matching display format. Values with leading zeros or more than 15 significant digits stay as text so nothing is changed or rounded. Untick it to keep every cell as text.

Yes. CSV files from European versions of Excel use ; as the delimiter and , as the decimal separator. The tool detects the semicolon and, in Auto mode, reads 1.234,56 as one thousand two hundred thirty-four point five six.

The file was probably saved in an older encoding. Auto mode reads UTF-8 and falls back to Windows-1252; if names still look garbled, pick the right encoding from the Text encoding list.

Files of tens of megabytes convert in a few seconds in a modern browser. An Excel sheet holds at most 1,048,576 rows and 16,384 columns, so larger files must be split first.